Dose Optimization and Reduction in Musculoskeletal CT Including the Spine

  • A. Gervaise
  • P. Teixeira
  • N. Villani
  • S. Lecocq
  • M. Louis
  • A. Blum
Part of the Medical Radiology book series (MEDRAD)


Due to improvements in temporal and spatial resolution, and despite its radiating character, CT is still indicated for the assessment of many musculoskeletal disorders. New exploration techniques, such as dynamic CT of the joints and bone perfusion imaging, are now available in musculoskeletal imaging. However, they require the repetition of many phases and lead to an increase in dose. For these new applications and for spine and proximal joint imaging in the vicinity of radiosensitive organs, optimization and dose reduction are critical. In this chapter, we report the typical doses delivered in musculoskeletal CT examinations and discuss several options for allowing dose optimization and reduction, depending on behavioral and technical factors. Among them, tube current and tube potential optimization are still critical and must be adapted to the type of exploration and the body habitus of each patient. Recent technical factors can also help to reduce the doses such as automatic tube current modulation, active collimation or new CT iterative reconstructions. Although these technical factors allow for an important reduction of the doses, behavioral factors such as respecting the indications and limitations of the scan coverage remain essential. Finally, we will also indicate how to optimize and reduce the doses in particular applications of musculoskeletal imaging, such as dynamic CT, bone and soft tissue perfusion CT and dual-energy CT.


Iterative Reconstruction Filter Back Projection Compute Tomography Perfusion Dose Length Product Helical Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • A. Gervaise
    • 1
    • 2
  • P. Teixeira
    • 1
  • N. Villani
    • 3
  • S. Lecocq
    • 1
  • M. Louis
    • 1
  • A. Blum
    • 1
  1. 1.Guilloz Imaging Department, Hôpital CentralCHU NancyNancy CedexFrance
  2. 2.Medical Imaging DepartmentHôpital d’Instruction des Armées LegouestMetz Cedex 3France
  3. 3.Medical Radiophysics UnitCRAN UMR 7039 CNRS, Centre Alexis VautrinVandoeuvre-les-NancyFrance

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